This is how I get it working. I run Rasa in containers but Apache and Nginx “directly” (in next phase will dockertize them too).
Anyway, here is architecture: Rasa 2.2 are running in docker containers and exposed different ports, Apache is serving web pages where I use Botfron webchat widget. Then I have configured Ngingx reverse proxy with SSL. This is also handy if you have multiple chatbots in different ports.
My environment
Server version: Apache/2.4.41 (Ubuntu)
nginx version: nginx/1.18.0 (Ubuntu
Botfront Webchat 0.11.12
Ubuntu 18.04
Docker version 20.10.9, build c2ea9bc
docker-compose version 1.29.2, build 5becea4c
Here are my testbed config files
Nginx reverse proxy
/etc/nginx/sites-available
server {
server_name testibot1.omnia.fi;
index index.php index.html index.htm index.nginx-debian.html;
root /var/www/public_html/testibot1;
# here starts proxy settings
location / {
proxy_pass http://testibot1.omnia.fi:444;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
}
# here starts socket.io settings
location /socket.io/ {
proxy_pass http://testibot1.omnia.fi:5006/socket.io/;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
access_log /var/log/nginx/testibot1.fi_access.log;
error_log /var/log/nginx/testibot1.fi_error.log;
# rest is coming automatically when installing certbot
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/testibot1.omnia.fi/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/testibot1.omnia.fi/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
# and here secon bot with similar settings but different locations, of course
server {
server_name testibotti2.omnia.fi;
index index.php index.html index.htm index.nginx-debian.html;
root /var/www/public_html/testibotti2;
location / {
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header Host $host;
proxy_pass http://testibotti2.omnia.fi:444;
}
location /socket.io/ {
proxy_pass http://testibotti2.omnia.fi:5007/socket.io/;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection 'upgrade';
proxy_set_header Host $host;
proxy_cache_bypass $http_upgrade;
}
access_log /var/log/nginx/testibotti2.fi_access.log;
error_log /var/log/nginx/testibotti2.fi_error.log;
listen 443 ssl; # managed by Certbot
ssl_certificate /etc/letsencrypt/live/testibot1.omnia.fi/fullchain.pem; # managed by Certbot
ssl_certificate_key /etc/letsencrypt/live/testibot1.omnia.fi/privkey.pem; # managed by Certbot
include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
}
server {
if ($host = testibot1.omnia.fi) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;
server_name testibot1.omnia.fi;
return 404; # managed by Certbot
}
server {
if ($host = testibotti2.omnia.fi) {
return 301 https://$host$request_uri;
} # managed by Certbot
listen 80;
server_name testibotti2.omnia.fi;
return 404; # managed by Certbot
}
Then you need to modify index page
/var/www/public_html/testibot1
<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<script src="https://cdn.jsdelivr.net/npm/rasa-webchat@0.11.12/lib/index.min.js"></script>
<link rel="stylesheet" type="text/css" href="style.css">
</head>
<body>
Testisaitti 1
<div id="webchat"></div>
<script>
WebChat.default.init({
showFullScreenButton: true,
selector: "#webchat",
initPayload: "/tervetuloa",
customData: {"language": "fi"}, // arbitrary custom data. Stay minimal as this will be added to the socket
//Here is without SSL so HTTP
//socketUrl: "http://testibot1.omnia.fi:5006",
// and with SSL youn need to change to shown below
socketUrl: "https://testibot1.omnia.fi",
socketPath: "/socket.io/",
embedded: false,
title: "AsPa botti",
subtitle: "Testibotti 1",
inputTextFieldHint: "Vastaa kysymyksiin",
profileAvatar:"robot_icon.png",
params: {"storage": "session"} // can be set to "local" or "session". details in storage section.
})
</script>
</body>
</html>
Lastly, you can test if your socket is working with following procedure
curl --output testibotti2_socket_test "http://testibotti2.omnia.fi:5007/socket.io/?EIO=4&transport=polling"
cat testibotti2_socket_test
You should see
{"sid":"a3bb9e2baf6445d5a20514fb14448059","upgrades":["websocket"],"pingTimeout":60000,"pingInterval":25000}
Hope this helps, and just ask anything if in doupt.
